Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 62: Higgs Boson: Extended Models 2

T 62.7: Vortrag

Mittwoch, 23. März 2022, 17:45–18:00, T-H21

Search for heavy Higgs bosons in the Ztt final state with CMS — •Daniel Christian Hundhausen, Ksenia de Leo, Yannick Fischer, Johannes Haller, and Matthias Schröder — Institut für Experimentalphysik, Universität Hamburg

Since its discovery in 2012 the properties of the Higgs boson at 125 GeV have been studied extensively, confirming a standard model like behavior. However, the observed resonance might well be part of an extended Higgs sector, which is predicted in various scenarios of new physics beyond the standard model. Two Higgs Doublet Models (2HDM) provide a generic description of the phenomenology arising in models with a second Higgs doublet. In this talk we will investigate the hypothetical decay of a CP odd heavy Higgs boson A decaying into a CP even heavy Higgs boson H and a Z boson, with the H decaying further into a pair of top quarks. This decay channel is particularly relevant in the high mass and low tan(β) regime. We will present the strategy and status of our analysis, targeting the fully hadronic tt decay with the Z boson decaying to µ⁺µ⁻.